Three months after Vincent Keller was abducted by Muirfield, Detective Catherine Chandler is reunited with him – but not in the way she planned. He's changed: his scar has disappeared, his memory has been wiped clean and he returns as a supercharged beast on a mysterious mission. Catherine needs to unravel the reasons behind Vincent's change if she has any hopes of recovering their epic love, while also trying to solve the secrets that swirl around her own life.While attempting to learn more about Vincent's mission, Cat gets kidnapped by him. Their growing chemistry complicates things. Meanwhile, Tess, J.T. and Gabe come together to help Cat.